I don't think that the SMG should make a return whatsoever. However 343i said that they wer going to introduce and "Assault Carbine" that would remind players of a previous weapon that "Mangled Shields." To me this sounds like the SMG is going to make a return. And while I don't see the point of bringing such a weapon back without dual-wielding being present, should it be brought back I would sure hope that it includes the silencer and zoom.